下面为大家推荐的是6道SAT改错题的练习，后面附有详细的答案解析。SAT改错题是语法部分中比较简答的，对考生的要求也不是很难，多做一些练习题会更好的夯实基础，提高解题的效率。

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　　1.Whether the Sumerians A(were) the first people B(to develop) writing is C(uncertain), but D(theirs) is the oldest known writing system. E(No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　2.a (It) weaves across a strip of tropical land b(where) the Isthmus of Panama c (narrows) in the shape of a long flattened letter S, the Panama Canal d (links) the Atlantic and Pacific Oceans. e (No error)

　　Answer Choices

　　(A) a

　　(B) b

　　(C) c

　　(D) d

　　(E) e

　　3.The Bear Gulch Limestone Formation A(in) Montana is a sequence of bedded limestone layers B(up to) 90 feet thick C(and) approximately 8 miles D(across). E(No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　4.a(It depends on) where in the world it is b(located), an underground electric-railway system c(may be) called a subway, underground railway, tube, d(or metro). e(No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　5.Most ships A(move) through the Suez Canal B(with) C(their own) power, but large ships D(must be) assisted by a tugboat. E(No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　6.a(It depends on) where in the world it is b(located), an underground electric-railway system c(may be) called a subway, underground railway, tube, d(or metro). e(No error)

　　Answer Choices

　　(A) A

　　(B) B

　　(C) C

　　(D) D

　　(E) E

　　Explanation

　　1.The correct answer is E

　　There is no error in this sentence.

　　2.The correct answer is A

　　The error in this sentence occurs at (A), where a comma splice is created. To fix the comma splice, “It weaves” should be changed to “Weaving.”

　　3.The correct answer is E

　　There is no error in this sentence.

　　4.The correct answer is A

　　The error in this sentence occurs at (A), where awkward phrasing and an unnecessary pronoun create a comma splice. The entire phrase “It depends on” can be reduced to “Depending on.”

　　5.The correct answer is B

　　The error in this sentence occurs at (B), where there is an improper idiom. The idiom is “under their own power,” not “with their own power.”

　　6.The correct answer is A

　　The error in this sentence occurs at (A), where awkward phrasing and an unnecessary pronoun create a comma splice. The entire phrase “It depends on” can be reduced to “Depending on.”

　　以上就是这6道SAT改错题练习的全部内容，非常详细和非常实用。大家在备考自己的SAT语法考试的时候，多做一些改错题的练习对另外两种题型的解答也是有好处，经过一段时间练习，相信会有很大的收获的。

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